Which of the following is true regarding green water?

The statement that green water is the water evapotranspired by plants is accurate and reflects an important aspect of the hydrological cycle. Green water refers to the moisture in the soil that is taken up by plants and subsequently released into the atmosphere through the processes of evaporation and transpiration. This concept is significant in understanding how plant growth and agricultural productivity can be supported by soil moisture, rather than directly relying on surface water sources like rivers or lakes.

This understanding of green water is crucial in water resource management and agricultural practices, as it highlights the importance of soil moisture in sustaining ecosystems and crop growth. By distinguishing green water in this way, it emphasizes the role of plants in the water cycle and the importance of managing land and water resources effectively.

In contrast, the other statements do not accurately define green water. While nutrient-rich surface waters pertain to blue water bodies, unpolluted surface water is a quality indicator that doesn't specifically relate to the concept of green water, and the idea that green water only includes lakes and rivers/streams is a misconception; those categories fall under blue water, which refers to surface and groundwater bodies.